Five different dual cure resin cements were used for cementing rods to bovine dentin; Multilink Automix (Ivoclar Vivadent), Variolink Esthetic (Ivoclar Vivadent), Panavia F2.0 (Kuraray Noritake Dental), Duo-Link (Bisco) RelyX Unicem (3 M ESPE) (Table 1 ).
Cementation was performed according to producers’ manual and primer was applied when recommended (Table 1 ).
Ten rods from each of the three groups; KHF2 etched zirconia, air borne particle abraded zirconia and HF etched lithium disilicate, were cemented by each cement.
Dentine was cleaned using pumice powder dispensed in water prior to cementation.
After placing the rods onto dentin, a standardized 882 g seating load was applied by a cementation jig. Excess cement was removed using quick stick micro-brush before light curing 20 s each from 4 directions.
All specimens were kept dry at room temperature for 15 min following cementation and thereafter immersed in 37°C distilled water for 24 h.
Specimens were sandblasted using Al2O3 to remove cement remnant outside the rods and evaluated by light microscopy. Test units were thermocycled 5000 cycles in 5 °C and 55 °C water baths.
Cementation was performed according to producers’ manual and primer was applied when recommended (
Ten rods from each of the three groups; KHF2 etched zirconia, air borne particle abraded zirconia and HF etched lithium disilicate, were cemented by each cement.
Dentine was cleaned using pumice powder dispensed in water prior to cementation.
After placing the rods onto dentin, a standardized 882 g seating load was applied by a cementation jig. Excess cement was removed using quick stick micro-brush before light curing 20 s each from 4 directions.
All specimens were kept dry at room temperature for 15 min following cementation and thereafter immersed in 37°C distilled water for 24 h.
Specimens were sandblasted using Al2O3 to remove cement remnant outside the rods and evaluated by light microscopy. Test units were thermocycled 5000 cycles in 5 °C and 55 °C water baths.